US4730204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copying machine with automatic original feeding device
Assignee: Sharp Corp
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Filing: 1986-04-10
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Granted: 1988-03-08
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Expires: 2006-04-10
Abstract
Abstract Disclosed is a copying machine provided with a device for detecting a jammed original in the original-conveying path and a device that first discharges copying papers during image-transference process from the copying mechanism upon detection of paper jamming and then causes the value of the copied-paper counter to return to the value displayed before the jamming.
Inventors
- 👤 Fumio Satoh
- 👤 Kazuo Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:55
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
A copying machine comprising: means for detecting a jammed original in an original paper conveying path; and means for first discharging copy paper utilized in an image transference process from the copying machine upon detection of said jammed original and for subsequently causing the value of a copied-paper counter to return to the value displayed before the paper jammed.
Claim 2
Dependent Claim
59 words
A copying machine comprising: means for detecting a jammed original in an original paper conveying path; and means for first discharging copy paper utilized in an image transference process from the copying machine upon detection of said jammed original and for subsequently causing the value of a copied-paper counter to return to the value displayed before the paper jammed.
Claim 3
Dependent Claim
85 words
An automatic original feeding device provided with a paper-forward rotating original feeding roller and a paper-reverse rotating double-feeding prevention roller, which rollers are spaced apart from and face each other so that an original can be forwarded to a position between said rollers comprising: guide means positioned between said rollers for guiding the leading edge of the original to a corresponding position between said roller without causing the leading edge of said original paper to come into contact with said paper-reverse rotating double-feeding prevention roller.
Claim 4
Dependent Claim
85 words
An automatic original feeding device provided with a paper-forward rotating original feeding roller and a paper-reverse rotating double-feeding prevention roller, which rollers are spaced apart from and face each other so that an original can be forwarded to a position between said rollers comprising: guide means positioned between said rollers for guiding the leading edge of the original to a corresponding position between said roller without causing the leading edge of said original paper to come into contact with said paper-reverse rotating double-feeding prevention roller.
Claim 5
Dependent Claim
141 words
A copy machine comprising: an original paper conveying path; means for conveying an original paper through said paper conveying path; means for detecting a jammed original in said original paper conveying path; a copy paper conveying path; means for discharging a copy paper to the exterior of said copying machine from said copy paper conveying path; a copied-paper counter for incrementally counting a number of original papers being copied according to a number of copied papers discharged from said copy paper conveying path; means, responsive to said means for detecting a jammed original, for first discharging copy paper during an image transference process from the copying machine, for temporarily interrupting said means for conveying an original paper through said paper conveying path, and for returning the value of the copied-paper counter to the value displayed before the paper jam is detected.
Claim 6
Dependent Claim
141 words
A copy machine comprising: an original paper conveying path; means for conveying an original paper through said paper conveying path; means for detecting a jammed original in said original paper conveying path; a copy paper conveying path; means for discharging a copy paper to the exterior of said copying machine from said copy paper conveying path; a copied-paper counter for incrementally counting a number of original papers being copied according to a number of copied papers discharged from said copy paper conveying path; means, responsive to said means for detecting a jammed original, for first discharging copy paper during an image transference process from the copying machine, for temporarily interrupting said means for conveying an original paper through said paper conveying path, and for returning the value of the copied-paper counter to the value displayed before the paper jam is detected.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |